Lecture: The physics of dense stellar systems and the origin of stellar populations (astro8531)

    
                                                                    Pavel Kroupa
                                                    Argelander-Institut  fuer  Astronomie, Universitaet Bonn


Mondays 15:45 - 18:45,  Hoersaal AIfA (Room 0.012)

Schedule:


13.10.2025
1. Start and introduction (densesystems_1.pdf)
20.10.
2. Simple concepts: crossing time, relaxation time, properties of clusters (densesystems_2.pdf)
27.10.
3. Collisionless Boltzmann equation, phase-space-distribution functions (densesystems_3.pdf)
03.11.
4. The Plummer model, discretising/making clusters, escape velocity, dynamical equilibrium, dynamical states (densesystems_4.pdf)
10.11.
5. Fokker-Planck description, mass segregation (densesystems_5.pdf)
17.11.
6. Negative specific heat capacity, gravothermal catastrophy, evaporation, ejections, tidal field and radius, simple cluster evolution models (densesystems_6.pdf)
24.11.
no lecture
01.12.
7. The stellar IMF, the LF and the mass--luminosity relation of stars, solar-neighbourhood IMF (densesystems_7.pdf)
08.12.
8. The Initial Mass Function (IMF) of stars: in young and old star clusters; measurability of the IMF; alpha plot; origin (densesystems_8.pdf)
15.12.
9. The IMF as a non-probabilistic distribution function; how to calculate a galaxy (densesystems_9.pdf)
22.12.
10. The initial binary population (densesystems_10.pdf)
23.12.25-06.01.2026
Xmas break
12.01.26
11. The birth and early evolution of star clusters and some implications for the astrophysics of galaxies (densesystems_11.pdf)
19.01.
12. The formation of super-massive black holes (densesystems_12.pdf)
26.01.
rehearsal
02.02.
1st Exam: 15:45 - 18:45, Hoersaal (Room 0.008) AIfA
30.03.
Repeat exam: 15:00--18:00, Hoersaal HISKP (Nusallee 14-16, ground floor)